feat: Implement Room Streaming System

- Add RoomStreamingManager to manage room loading and unloading based on player proximity.
- Create StreamingBudgetConfigSO for memory and performance budgeting of the streaming system.
- Introduce TransitionDirector to handle seamless and atmospheric fade transitions between rooms.
- Develop WorldGraph to represent room connectivity and facilitate neighbor queries and distance calculations.
- Implement RoomNode and RoomEdge classes to structure room data and connections.

Assets/_Game/Scripts/Enemies/Abilities/AbilityRunState.cs

@@ -0,0 +1,26 @@
+namespace BaseGames.Enemies.Abilities
+{
+    /// <summary>
+    /// 能力执行的阶段枚举（架构 07_EnemyModule §8）。
+    /// 用于 BD/Animator/UI 查询能力当前在哪个阶段（telegraph/出招/恢复）。
+    /// </summary>
+    public enum AbilityRunState
+    {
+        Idle,
+        Telegraph,
+        Windup,
+        Active,
+        Recovery,
+        Interrupted
+    }
+
+    /// <summary>能力中断原因。供 BD 判断是否需要重新调度。</summary>
+    public enum InterruptReason
+    {
+        ExternalRequest,
+        Hurt,
+        Stagger,
+        KnockUp,
+        Dead
+    }
+}